"Motocross" is just a name they stick on the bikes. Chinese made bike and the parts are probably interchangable with a lot of other "brands" of bikes coming out of the same factory. As High Lord Gomer said, throttle cable and inner tube are no brainers. Any bike shop will have something that will work. As for carb, they probably don't have a carb "kit." Cleaning might do it. If you need specific carb parts, they are probably going to be Mikuni or Keihin knockoff parts. What specific problem are you having that you think you need a carb kit??